Art or process of producing ozone.



J. F. PLACE.

ART 0R PROGESS 0F PRODUCING OZONE.

-APPLIUA'L'ION rum) Emme. 1909.

932,898. Patented Aug. 31, 1909.

Inventor:

. of New Jersey,

JAMES F. PLAGE, 0F G'LEN RIDGE, NEW JERSEY.

ART OB PROCES@ 0F PRODUCING OZONE.k

Speeiicaton of Letters Patent. Patented Aug. 31, 19 09.

Application led February 26, 1909. Serial No. 480,279.

To all whom it may concern:`

n Be it known that I, J AMES F. PLAGE, a citizen of the United States, and resident .of Glen Ridge, in the county of Essex and State have invented certain`new and useful Improvements in the Art `or. Proco'f Producing Ozone, of which the following is a specification.

This invention relates to the art or process of the production of ozone, and more especially to the production of ozone from oxygen.

Its object is to simplify the process, and -to chcapen its cost; and to not larger percentage of ozone, but to produce ozone oi greater intense activity.A

I attain these ob'eets .in the manner as herein set forth, and a reference to the accompanying illustration Will serve to ex lain my ne'w art or process, in which the gure shows a longitudinal Vertical section of a liquid oxygen evaporating tank, by which extremely cold oxygen vapors are conducted to an ozonizer subjecting the oxygen ot the air to the silent In the drawinfr accom an in this s ecie P Y, g P fication, to lllustrate iny process, at l,

show in` elevation a representation of an ozonizer, the letters I" and N showing the,

electric current conductors or terminals. It

is unnecessary to describe this ozonizer, as'it is. a well-known apparatus, wherein air is passed through, and is therein subjected to the silent discharge of an electric current,

and apercentage of the oxygen of the air is thereby converted into ozone.

Experiencehas proven that the lower the temperature 1s ofthe air admitted to the ozonizer, the greater is thc percentage of the oxygen .converted into ozone; and if pure oxygen is used instead of air, :i much larger -aniount of ozone is produced.

In my process I use not only oxygen, but

by taking the oxygen in liquid form, and

causing it to evaporate and conducting such oxygen vapors and cold gases direct,to the ozonizer, such gases are subjecte'l""'to the electric discharge when at a temperature of about 3000 below zero I `alirenheit. In this way a percentage of ozone is obtained about l() tinies great as if the saine Volume of pure oxygen gas were subjected to the electric only produce a.

a well-known apparatus for outside source.

current at a normal temperature say of -1-70o F. This ozone is intensely active, as it is not diluted with alarge volume of nitro'en gas, yis the case when air is asse .through the ozonizer.

To illustrate my process, I'show in the drawing at 2`a liquid oxygen evaporating' tank. At 3 I have a vertical gage glass, to show the height of the liquid in the tank; some other form of indicator will answer just aswell. At 5 I show a liquid oxygen -supply pipe, having a valve G, and a connecting pipe 7 delivering to the tank. This liquid oxygen supply pipe (5) -is supplied with liquid oxygen from an outside source,

.located so as t-o run into'the pipe by gravity.

-To the pipe 7 is also connected the oxygen vapor p1 e 8 leading to the ozonizer (l) and having t e safety valve 9 icock 10. These pipes 5, 7 and 8 being all connected, the pipe 7 is used both an inlet liquid oxygen supply pipe to and a gaseous oxygen or vapor outlet pipe from the vaporizing tank 2, having the pressure gage 1l.

-At 12 I show a compressed air pipe, which is Supplied with dry compressed air from an This pipe enters the tank 2 as shown, and forrns a coil l2 the liquid oxygen in said tank. vIt continues up out of the tank in the pipe 12C, which has a branch 13'With valve 14. This branch pipe 13 is connected as shown to the oxygen vapor pipe 8 near Where it enters the ozonizer.

The operation of Li uid oxygen is admitted to the tank 2 until 1t is full by opening the inlet valve (i, and opening cock 10; then compressed air is admitted to the coils 12 by opening valves 15 and 16. The liquid oxygen in tank 2 will boil rapidly, taking its heat'ot vaporization from the dry compressed air in the coils -1 2, and the oxygen vap'or and cold gas will pass up through pipes 10 into the ozonizer, at a temperature oi about #300 below zero Fahrenheit-depending upon its pressure and.' how pure it is. Being-subJected to the electric current in thc ozonizer, the gas is discharged therefrom through the outletpipe 17, a large percentage thereof being converted into pure ozone of intense activity.

By regulating the opening of the liquid oxygen valve 6 and the compressed air valve submerged in and the shut-ofi' the process is as follows:

7 and 8 through the valve 15, they may be adjusted southat the tank 2 .Will be maintained full of liquid constantlythe supply from valve 6 being just equal to the evaporation. By adjusting valve 16, the pressure of the air in coils 12L may be maintained at any desirable tension, as indicated bythe pressure gage 18. 'It this tension in coils 12*l is above the critical pressure for condensation at the temperature of the liquid in tank 2 (say about two atmospheres) the compressed air in the coils will become liquefied, and such liquid air maybe delivered from the pipe 12c to a liquid air separator, and separated into nitrogen gas and liquid oxygenthe latter being used to help supply the tank 2 through supply pipe 5.

It' it is desirable to mix the oxygen vapor being delivered to the ozonizer through pipe 8, with some air, Valve 16 may be opened,I then the pressure of the air in the submerged coils 12l will be at atmospherietensiom ,and the air therein will not liquefyg'buttvill be in temperature Within a fewdegrees' of liquid air at atmospheric pressure; then valve 14 may be opened, and the oxygen vapor and cold oxygen gas being delivered to the ozonizer through pipe 8, may be given through branch pipe l'any desired proportion of air, in saine relative constituency as the atmosphere-79.% nitrogen and 21% oxygen-but l at a, temperature almost at the point of liquefaction. v

All the parts are insulated from outside heat by the non-conducting packings 20.

Having thus described my invention, what I claim as new and original and desire to se= cure by Letters Patent, is

1. Theiart or process of producing ozone, which comprises evaporating liquid oxygen by heat drawn from a column of air in a pipe submerged therein, and .subjecting the cold vapor and oxygen gases from said evaporating liquid to an electric current in an ozonizer. i

2. The art or process of producing ozone which comprises evaporating liquid oxygen by heat drawn from atmospheric air, then mixing said cold vapors from said evaporatf ing liquid with portions of the cooled air used to evaporate the same, and conducting said cold gaseous mixture through an ozo- -fnizeiz The art or process of producing ozone,

comprising the method of evaporating liquid oxygen by heat drawn from compressed air being liquefied, and conducting the vapors and cold gases from said evaporating liquid through an ozonizer; then replenishing said liquid oxygen being thus evaporated', by the oxygenof said liquefied compressed air.

Signed at New York in the county of New York and State of New York this 13th day of February A. D.'1909.

i JAMES F. PLACE.

'Witnesses:

CHAS. EDW. PLACE,- J. G. GADSDEN. 

